Broadband dual-frequency operation of circular patch antennas and arrays with a pair of L-shaped slots
- 9 July 2003
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 51 (5), 1018-1023
- https://doi.org/10.1109/tap.2003.811477
Abstract
By embedding properly arranged L-shaped slots in a circular patch, a novel broadband dual-frequency design is proposed and experimentally studied. With the use of an L-strip microstrip line for feeding the proposed antenna, the impedance bandwidths, determined from 10 dB return loss, of two operating bands can reach about 7.0% to 12.5% for the lower band and 18.9% to 21.5% for the higher band. Operating frequencies across the obtained lower and higher bands are of the same polarization planes, and have a tunable frequency ratio between the center frequencies of the two operating bands ranging from about 1.31-1.61. The application of the proposed antenna to the design of a 2 /spl times/ 2 broadband dual-frequency patch antenna array is also demonstrated. Details of the proposed broadband dual-frequency design are described, and experimental results of the constructed prototypes are presented and discussed.Keywords
This publication has 11 references indexed in Scilit:
- Cross-polarization level reduction of broadband triangular patch antenna with dual L-strip linesMicrowave and Optical Technology Letters, 2002
- A dual capacitively fed broadband patch antenna with reduced cross-polarization radiationMicrowave and Optical Technology Letters, 2000
- Experimental study of a microstrip patch antenna with an L-shaped probeIEEE Transactions on Antennas and Propagation, 2000
- A wideband circular patch antennaMicrowave and Optical Technology Letters, 2000
- Single-feed dual-frequency circular microstrip antenna with an open-ring slotMicrowave and Optical Technology Letters, 1999
- Inset-microstrip-line-fed dual-frequency circular microstrip antenna and its application to a two-element dual-frequency microstrip arrayIEE Proceedings - Microwaves, Antennas and Propagation, 1999
- Microstrip line-fed L-strip patch antennaIEE Proceedings - Microwaves, Antennas and Propagation, 1999
- Circular U-slot patch with dielectric superstrateElectronics Letters, 1997
- Experimental studies of circular patches with slotsIEE Proceedings - Microwaves, Antennas and Propagation, 1997
- A study of microstrip array antennas with the feed networkIEEE Transactions on Antennas and Propagation, 1989